Hey there, saw the make and they're looking really good so far!
I have three expansion tiles to add here soon: the mosquito, ladybug, and pill bug. They're in the works, but my girlfriend (who is working on the minimal-style drawings) started a new job this week, so needless to say it got pushed to the back burner for a bit. I'll try to get them up here within a week.
Glad you're having a good time with these, and it wouldd be great to see the full set when they're ready for Christmas :)